Full text search or "multi key word search" in requests / tickets

Hi, 

I want to know how to perform a full text search on requests in SuperOffice. 

The "Full text search" box in the upper right will only search within the subject of a request, but not within the content of the mails or comments. But this is what I want to do. 

My current workaround is to use the "find request" feature and add the "content" attribute as a criteria. But if I try to search for multiple words this does not work. I can only add "content" once ... so no AND based search can be created.

Is there a way to to a search inside of the content with multiple key words.

Thanks in advance for your responses. 

Kind regards,

Thomas